Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ecf4b636744bd69…

MALICIOUS

PDF

83.1 KB Created: 2021-03-20 23:17:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 8cdf962aa1cd5123c8e4b23fefd67289 SHA-1: 586b09fdce1fa95dd963e8abeecfb841a66b73dc SHA-256: 1ecf4b636744bd69042cfe089b893e5c51414c4f544c54f467136a3b70efe28c
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, identified as a link farm, with a high concentration of disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or trojan activity. The embedded URLs suggest the document is designed to redirect users to potentially harmful sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://lozipotod.ru/wix?keyword=oracion+a+la+sagrada+sangre+de+jesus PDF link annotation
    • https://cdn.sqhk.co/riketumes/miiL3A4/26199944297.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383930/normal_5ffb9eb0c5b30.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/eFiaBQw/fivodozogasovuxedutav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_6036ca5878e6a.pdfIn PDF document text
    • https://sexedevojaboto.weebly.com/uploads/1/3/2/6/132695366/fitugube-xovoxerusolob.pdfIn PDF document text
    • https://rawogozanukej.weebly.com/uploads/1/3/4/6/134623914/7260441.pdfIn PDF document text
    • https://cdn.sqhk.co/turanexode/hfgihbg/firibamu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500453/normal_5fc68ac913276.pdfIn PDF document text
    • https://cdn.sqhk.co/vilosezuj/dmkuhgP/6496560145.pdfIn PDF document text
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/ef1a5e.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/CsqibHb/duzibadufefubonatamarukez.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/jhahij9/bubble_shooter_2020_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zewezerezi/2hdjeje/2674396097.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/Higijig/73075533047.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wawebexitet.rf.gd/nusisorosuf.pdfIn PDF document text
    • http://nivobilov.epizy.com/yowhatsapp2_update_version.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED45 5212 bytes
SHA-256: 83fdb5467b7ce580e876d248b9375d667c63d54687ef6aecf5568ff54e161e76
font_01_sfnt_off0000ff0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0A 12948 bytes
SHA-256: 8754f095fb6e3ebf25b4c917ffc62edf7769dd1dc4ebc2e09885bacd6f84c2c0
font_02_sfnt_off00012865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12865 16168 bytes
SHA-256: 0216150ac0e5ade23b072752459620ec704bdac01526bfbadd96d51f96873ef3

Open this report in the interactive analyzer, or submit your own file for analysis.